Unreal Engine Issues

When a BPActor containing HISMs is multiplied with a scale, LOD display control doesn't work correctly

Workaround 1: 1. Change HierarchicalInstancedStaticMesh.cpp in either of the following ways:void{{ FHierarchicalStaticMeshSceneProxy::GetDynamicMeshElements(const TArray<const FSceneView*>& Views, c ...

Some post-processing passes sample outside of the viewport when using scene capture components

It looks like the SSAO shader does not clamp its sample space to the half view size for the two inputs "Ambient Occlusion" and "AmbientOcclusionSetup", leading to invalid data entering the edge of f ...

Volumetric fog flicker side screen

The flicker is visible in Epic scalability as well, it is just smaller on screen because the fog voxels are smaller (r.VolumetricFog.GridPixelSize). ...

Thin translucent doesn't work with separate translucency and Before-DOF

Expensive WaitForTask in SceneCapture2D

UDN users have reported that expensive scene captures stall the render thread due to RDG flushing the RHI thread for resource deletion. This only needs to happen once per frame. ...

Incorrect Subsurface Profile Transmission rendering in Preview window

Subsurface material rendered in preview window has too intense subsurface scattering or strange artifact. However, it shows no error in Play in Editor. After disabling the contact shadow in PIE, abl ...

Blending cameras with different post process overrides, doesn't blend the post process correctly

DrawDebug elements on screen affect aspect ratio letterboxing

During gameplay when the view target camera's aspect ratio is not exactly the viewport's aspect ratio, the presence of rendered debug draw elements (DrawDebugArrow, etc) makes the viewport's rendere ...

Separate translucency rendering and material BumpOffset UV issues

It appears as if the primary screenpercentage is being sent as the screen size to separate translucency materials, even though separate translucency has its own screenpercentage (r.SeparateTransluce ...

Volumetric fog black and not updating with real-time capture skylight

It looks like the skylight is not updating the CPU side SH values when Real Time Capture is enabled, and thus old/empty values are sent to the fog. ...